> It needs a lot of backtracking planning. I has to guess which will be the last expression and try to reach the numbers that it used. I ended up creating a me

> It needs a lot of backtracking planning. I has to guess which will be the last expression and try to reach the numbers that it used. I ended up creating a mental factorization table of the target number with only the available numbers as factors. That pretty "quickly" lead to a solution in only three steps. I put the "quickly" in scare quotes because I essentially brute forced the problem.